WO2000055276A1 - Materiau de frottement - Google Patents

Materiau de frottement Download PDF

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Publication number
WO2000055276A1
WO2000055276A1 PCT/JP2000/001580 JP0001580W WO0055276A1 WO 2000055276 A1 WO2000055276 A1 WO 2000055276A1 JP 0001580 W JP0001580 W JP 0001580W WO 0055276 A1 WO0055276 A1 WO 0055276A1
Authority
WO
WIPO (PCT)
Prior art keywords
friction
potassium
friction material
weight
parts
Prior art date
Application number
PCT/JP2000/001580
Other languages
English (en)
Japanese (ja)
Inventor
Hiroshi Ogawa
Original Assignee
Otsuka Kagaku Kabushiki Kaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Otsuka Kagaku Kabushiki Kaisha filed Critical Otsuka Kagaku Kabushiki Kaisha
Priority to AU31915/00A priority Critical patent/AU3191500A/en
Publication of WO2000055276A1 publication Critical patent/WO2000055276A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
    • F16D69/02—Composition of linings ; Methods of manufacturing
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G23/00—Compounds of titanium
    • C01G23/003—Titanates
    • C01G23/005—Alkali titanates

Definitions

  • the present invention relates to a friction material suitable as a material for a braking member, for example, a material for a clutch facing, a material for a brake, and the like used in a braking device for an automobile, an aircraft, a railway vehicle, and industrial equipment.
  • a friction material suitable as a material for a braking member for example, a material for a clutch facing, a material for a brake, and the like used in a braking device for an automobile, an aircraft, a railway vehicle, and industrial equipment.
  • a friction material in a braking member a friction material obtained by dispersing asbestos in an organic or inorganic binder and binding and forming the same has been used.
  • a friction material using octaluminium titanate fiber or potassium hexatitanate fiber as a base fiber or a friction modifier has been proposed.
  • These titanate-reinforced rubber fibers do not have the carcinogenic properties of asbestos, have excellent heat resistance, and are effective in preventing fade phenomena and improving the thermal stability of friction characteristics. I have.
  • the present invention has been made in view of the above-mentioned conventional problems, and provides a friction modifier capable of improving friction and wear performance from a completely new viewpoint.
  • the friction material of the present invention is characterized in that potassium dititanate and Z or tetratitanic acid reamer are blended as a friction modifier.
  • Both dipotassium titanate and potassium tetratitanate used as friction modifiers in the present invention are compounds having a layered structure. It is a completely different compound.
  • Potassium titanate having such a layered structure when blended into a friction material, easily causes layer separation under high-temperature friction and sliding, and spreads uniformly on the sliding surface in the form of a film to improve friction and wear characteristics. Having.
  • the friction material of the present invention has an excellent effect that the friction coefficient can be kept uniform.
  • the friction modifier of the present invention can be separated and diffused in a plate shape in the friction material by mixing with a high shear during the production to form a so-called nanocomposite structure. Further, the friction material of the present invention has excellent strength.
  • potassium dititanate and potassium tetratitanate may be in various shapes such as granular, columnar, fibrous, and scaly.
  • Granular titanic acid lime is obtained by baking titanium oxide and lithium carbonate at 800 to 950 ° C, preferably 850 to 900 ° C for 1 to 5 hours in the presence of chloride lime. It can be manufactured by crushing and classifying.
  • Granular potassium titanate is prepared by slurrying granular potassium dititanate in water, stirring for 1 to 5 hours, washing with water, and then drying at 75 to 100 ° C, preferably around 900 ° C. It can be manufactured by firing for about 1 to 3 hours, crushing and classifying.
  • fibrous potassium dititanate is obtained by mixing titanium oxide and potassium carbonate, heating and melting to about 110 ° C, and then quenching and solidifying to break the potassium dititanate fiber aggregate obtained. It can be manufactured by classifying.
  • Fibrous potassium tetratitanate is prepared by mixing, for example, titanium oxide, potassium carbonate, and potassium molybdate, heating to about 950 to 110 ° C, melting, and then slowly cooling. It can be manufactured by the flux method characterized by the above.
  • the method for producing potassium dititanate and potassium tetratitanate is not limited to the above-mentioned production methods, and those produced by widely known methods can be used.
  • the compounding amount of dititanium phosphate and potassium or potassium tetratitanate is 3 to 50% by weight. It is preferred that
  • a friction material comprising a base fiber, a friction modifier and a binder
  • the mixing ratio of each component in the friction material is 1 to 60 parts by weight of the base fiber
  • the friction modifier include 20 to 80 parts by weight, including potassium dititanate and / or potassium tetratitanate, 10 to 40 parts by weight of a binder, and 0 to 60 parts by weight of other components.
  • a friction material having excellent performance in wear and friction coefficient at high temperatures can be provided.
  • the base fiber examples include resin fiber such as aramide fiber, metal fiber such as steel fiber and brass fiber, carbon fiber, glass fiber, ceramic fiber, rock wool, and wood pulp.
  • These base fibers are made of a silane coupling agent such as an aminosilane, an epoxysilane or a vinylsilane, a titanate coupling agent, or a phosphate ester to improve dispersibility and adhesion to a binder. It may be used after surface treatment.
  • friction modifier in addition to potassium dititanate and potassium tetratitanate, other friction modifiers may be used in combination as long as the effects of the present invention are not impaired.
  • friction modifiers include, for example, vulcanized or unvulcanized natural or synthetic rubber powders, organic resin powders such as cashew resin powders, resin dusts, rubber dusts, carbon black, graphite powders, molybdenum disulfide, barium sulfate , Calcium Carbonate, Clay, My Strength, Yu-Luk, Diatomaceous Earth, Antigorite, Sepiolite, Montmorillonite, Zeolai Inorganic powders such as sodium trititanate, sodium 5 titanate, potassium 6 titanate and potassium 8 titanate; metal powders such as copper, aluminum, zinc, and iron; alumina, silica, chromium oxide, titanium oxide, Oxide powders such as iron oxide can be mentioned.
  • organic resin powders such as cashew resin powders, resin dusts, rubber dusts, carbon black, graphite powders, molybdenum disulfide, barium sulfate , Calcium Carbonate, Clay, My Strength, Yu-Luk, Diatomaceous Earth
  • binder examples include thermosetting resins such as phenol resin, formaldehyde resin, melamine resin, epoxy resin, acrylic resin, aromatic polyester resin, and urea resin, natural rubber, nitrile rubber, butadiene rubber, styrene butadiene rubber, and chloroprene.
  • thermosetting resins such as phenol resin, formaldehyde resin, melamine resin, epoxy resin, acrylic resin, aromatic polyester resin, and urea resin, natural rubber, nitrile rubber, butadiene rubber, styrene butadiene rubber, and chloroprene.
  • Elastomers such as rubber, polyisoprene rubber, acrylic rubber, high styrene rubber, styrene propylene copolymer, polyamide resin, polyphenylene sulfide resin, polyether resin, polyimide resin, polyether ether ketone resin, thermoplastic liquid crystal polyester
  • organic binders such as thermoplastic resins such as resins, and inorganic binders such as alumina sol, silica sol, and silicone resin.
  • components such as an antibacterial agent, a lubricant, a grinding agent and the like can be blended.
  • the method for producing the friction material of the present invention is not particularly limited, and the friction material can be appropriately produced according to a conventionally known method for producing a friction material.
  • a base material fiber is dispersed in a binder, and a friction modifier and other components to be mixed as required are combined and blended to prepare a friction material composition, which is then placed in a mold.
  • a method of injecting the composition and heating under pressure to form a binder may be mentioned.
  • the components are mixed and then sufficiently mixed and prepared by using a mixing device having a high shear such as a high-speed mixer or a super mixer.
  • the binder is melt-kneaded in a twin-screw extruder, and the base fiber, friction modifier and other components, if necessary, are combined from a side hopper and extrusion-molded. Later, there can be mentioned a method of machining into a desired shape.
  • the friction material composition is dispersed in water or the like and formed on a paper net, After dewatering and sheet-forming, it is heated and pressed by a press machine to form a binder, and the obtained friction material is appropriately cut and polished to obtain a desired shape.
  • the friction material according to the present invention is suitable as a friction material used for a power control device such as a braking device or a transmission device in automobiles, aircraft, railway vehicles, industrial equipment, and the like.
  • a power control device such as a braking device or a transmission device in automobiles, aircraft, railway vehicles, industrial equipment, and the like.
  • the friction material used for the braking device include a brake material
  • examples of the friction material used for the transmission device include a clutch facing material.
  • High-purity aluminum hydroxide (A 1 (OH) 3 ) (purity> 99%) and strontium hydroxide (S r (OH) 2 ) are dispersed in water to form a slurry. After reacting at 15 atm and a reaction temperature of 150-200 ° C for 8 hours, the slurry is filtered, dried and scaly boehmite with a long diameter of 0.8-1.0 m and a short diameter of 0.08-1 m ( Strontium-containing alumina) was obtained.
  • Example 2 Granular potassium dititanate (average particle size 5 O jm) 15 parts, manufactured by calcining titanium oxide and potassium carbonate at 900 ° C for 1 to 5 hours in the presence of potassium chloride, crushing and classifying, Aramide Fiber (trade name “Kevlar pulp” 3 mm long, manufactured by Toray Industries, Inc.) 4 parts by weight, binder (phenolic resin) 9 parts by weight, organic additive (cash-dust etc.) 9 parts by weight, scaly flakes
  • One part manufactured in the reference example) 30 parts by weight, others (lubricants such as graphite, metal powder, oxide powder) 33 parts by weight are mixed well, filled into a mold, and then subjected to binding molding (pressure : 150 kgf / cm 2 , temperature 170 ° C, 5 minutes), molded, released, and heat treated (held at 180 ° C for 3 hours). Thereafter, the specimen was polished to obtain a specimen (B).
  • the organic additives, lubricants, metal powders, and oxide powders used were usually those added to the friction material.

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  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Braking Arrangements (AREA)

Abstract

L'invention concerne un matériau de frottement présentant d'excellentes propriétés du point du vue de l'usure et du coefficient de frottement à hautes températures. Ledit matériau est caractérisé en ce qu'il contient du dititanate de potassium et ou du tétratitanate de potassium comme régulateur de frottements.
PCT/JP2000/001580 1999-03-16 2000-03-15 Materiau de frottement WO2000055276A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU31915/00A AU3191500A (en) 1999-03-16 2000-03-15 Friction material

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11071103A JP2000265158A (ja) 1999-03-16 1999-03-16 摩擦材
JP11/71103 1999-03-16

Publications (1)

Publication Number Publication Date
WO2000055276A1 true WO2000055276A1 (fr) 2000-09-21

Family

ID=13450893

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2000/001580 WO2000055276A1 (fr) 1999-03-16 2000-03-15 Materiau de frottement

Country Status (3)

Country Link
JP (1) JP2000265158A (fr)
AU (1) AU3191500A (fr)
WO (1) WO2000055276A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5702080B2 (ja) * 2010-06-08 2015-04-15 曙ブレーキ工業株式会社 摩擦材及び摩擦材用造粒物
CN111720462B (zh) * 2012-12-21 2022-04-05 曙制动器工业株式会社 摩擦材料
JP6304984B2 (ja) * 2013-09-17 2018-04-04 曙ブレーキ工業株式会社 摩擦材
US10233988B2 (en) 2015-09-23 2019-03-19 Akebono Brake Industry Co., Ltd Friction material
CN107401568A (zh) * 2017-09-26 2017-11-28 安徽博耐克摩擦材料有限公司 一种盘式制动器刹车片衬片及其制备的方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6330400A (ja) * 1986-07-21 1988-02-09 Ishihara Sangyo Kaisha Ltd チタン酸カリウム繊維の製造方法
EP0900949A1 (fr) * 1997-09-04 1999-03-10 Sumitomo Electric Industries, Ltd. Matériau de friction fritté

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6330400A (ja) * 1986-07-21 1988-02-09 Ishihara Sangyo Kaisha Ltd チタン酸カリウム繊維の製造方法
EP0900949A1 (fr) * 1997-09-04 1999-03-10 Sumitomo Electric Industries, Ltd. Matériau de friction fritté

Also Published As

Publication number Publication date
AU3191500A (en) 2000-10-04
JP2000265158A (ja) 2000-09-26

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